My mechanic says now it is possible to flush the entire transmission rather than just changing the fluid, and recommends it. Is it possible this could disturb the transmission culture/environment - don’t component working parts have a memory of what is customary, and any change for the better could…

Yes, it is possible to flush the transmission. And, it is possible to do incredible damage to a transmission by flushing it, rather than changing the fluid. All too often, mechanics interested in a fast buck will flush a transmission without first changing the trans filter. This approach is likel…

Transmissions were designed to have the pan dropped, the fluid DRAINED and the filter replaced. Flush toilets… not transmissions! I would also flush your mechanic as anyone who recommends a transmission flush is not competent enough to air your tires.

Trans not acting up at all. Had fluid change about 3 years ago. He would chang filter before flush, but can you tell me if there is any rationale to flushig? It is said to prolong the life of the transmission. I have a 97 Lumina, 149,000 miles, and no trans problem.

On most transmissions (e.g. those without torque converter drain plugs) dropping the pan and changing the filter only changes a portion (variable) of the fluid. If this is done every 30K or so this isn’t a problem. If one does want ALL of the old fluid out and ALL new fluid in then a fluid exchang…

Not competent? I do transmission fluid exchange services all the time. And when done correctly can allow a transmission to go many miles without a problem. Ask the owner of a 1998 Toyota Camry with 190,000 miles on it. Original automatic transmission. Fluid exchanges done every 30,000 miles. Ask …

If you don’t have a machine and you really want to provide max protection to the transmission without taking it in and paying the ludicrous service fees (the local Ford and Toyota dealers now want to charge me $250-300 for this service!!!), and you don’t have a trans pan plug (curse you, Ford!), the…

nfs, When you do your fluid exchanges, do you ALWAYS recommend changing the filter before the exchange?? If the customer declines the filter change, do you decline to perform the exchange?? transman

Sorry you got caught up in my very wide net. There has never been a reason to flush a transmission other than to sell more transmission fluid. Vehicle manufacturers do not recommend transmission flushes as a whole. They do allow some flushing with certain machines and for certain procedures. Flushin…

Transmission flush

Maintenance/Repairs

nfs480 April 7, 2010, 3:38pm 7

I perform Transmission Fluid Exchanges all the time as well, there really seem to be a lot of misconceptions about what is involved in a transmission flush. Yes the machines that use detergents (flush chemicals) and force fluid through the transmission using high pressure can cause damage to it, but a cooler line flush is noninvasive.

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Transmission flush

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